Track per-relation cumulative time spent in [auto]vacuum and [auto]analyze

This commit adds four fields to the statistics of relations, aggregating
the amount of time spent for each operation on a relation:
- total_vacuum_time, for manual vacuum.
- total_autovacuum_time, for vacuum done by the autovacuum daemon.
- total_analyze_time, for manual analyze.
- total_autoanalyze_time, for analyze done by the autovacuum daemon.

This gives users the option to derive the average time spent for these
operations with the help of the related "count" fields.

Bump catalog version (for the catalog changes) and PGSTAT_FILE_FORMAT_ID
(for the additions in PgStat_StatTabEntry).

Author: Sami Imseih
Reviewed-by: Bertrand Drouvot, Michael Paquier
Discussion: https://postgr.es/m/CAA5RZ0uVOGBYmPEeGF2d1B_67tgNjKx_bKDuL+oUftuoz+=Y1g@mail.gmail.com

1 files changed, 15 insertions, 3 deletions

diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 856a8349c50..3361f6a69c9 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1804,7 +1804,11 @@ pg_stat_all_tables| SELECT c.oid AS relid,
     pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
     pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
     pg_stat_get_analyze_count(c.oid) AS analyze_count,
-    pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count
+    pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+    pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
+    pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
+    pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
+    pg_stat_get_total_autoanalyze_time(c.oid) AS total_autoanalyze_time
    FROM ((pg_class c
      LEFT JOIN pg_index i ON ((c.oid = i.indrelid)))
      LEFT JOIN pg_namespace n ON ((n.oid = c.relnamespace)))
@@ -2190,7 +2194,11 @@ pg_stat_sys_tables| SELECT relid,
     vacuum_count,
     autovacuum_count,
     analyze_count,
-    autoanalyze_count
+    autoanalyze_count,
+    total_vacuum_time,
+    total_autovacuum_time,
+    total_analyze_time,
+    total_autoanalyze_time
    FROM pg_stat_all_tables
   WHERE ((schemaname = ANY (ARRAY['pg_catalog'::name, 'information_schema'::name])) OR (schemaname ~ '^pg_toast'::text));
 pg_stat_user_functions| SELECT p.oid AS funcid,
@@ -2238,7 +2246,11 @@ pg_stat_user_tables| SELECT relid,
     vacuum_count,
     autovacuum_count,
     analyze_count,
-    autoanalyze_count
+    autoanalyze_count,
+    total_vacuum_time,
+    total_autovacuum_time,
+    total_analyze_time,
+    total_autoanalyze_time
    FROM pg_stat_all_tables
   WHERE ((schemaname <> ALL (ARRAY['pg_catalog'::name, 'information_schema'::name])) AND (schemaname !~ '^pg_toast'::text));
 pg_stat_wal| SELECT wal_records,